Frontier Airlines IAD to MIA on-time performance
Frontier Airlines nonstop flights from Washington to Miami · Aug 2025 – Jul 2026
On-time arrivals
69%
arrived < 15 min late
Cancelled
1.8%
2 flights
Avg arrival delay
21 min
67 min when late
Rank on route
#2 of 2
route average 83% on time
Key facts
- Frontier Airlines flights on IAD to MIA arrived on time 69% of the time in Aug 2025 – Jul 2026.
- 1.8% were cancelled, and 7% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 83% on time overall.
- The largest source of delay minutes was late-arriving aircraft (35%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft35%
- Air traffic control & airport congestion33%
- Airline (crew, maintenance, cleaning, fueling)31%
- Extreme weather0%
- Security0%
Other airlines on IAD to MIA
- United Airlines86% on time · 10 min avg delay
Full IAD to MIA comparison →
Frontier Airlines on-time record across all routes →
113 Frontier Airlines flights tracked on this route; 2 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.